Table 3 Distribution of the prevalence of PPMS and RRMS course at onset
From: Multiple sclerosis in the far north - incidence and prevalence in Nordland County, Norway, 1970–2010
Year | PPMS, % (n) | RRMS, % (n) | Unknown, % (n) |
|---|---|---|---|
1980 | 38.2 (13) | 52.9 (18) | 8.8 (3) |
1990 | 27.0 (41) | 65.1 (99) | 7.9 (12) |
2000 | 21.5 (59) | 76.0 (209) | 3.3 (9) |
2010 | 18.6 (80) | 80.0 (345) | 1.4 (6) |